JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://cdnjs.cloudflare.com/ajax/libs/knockout/2.0.0/knockout-min.js"></script>
<div data-bind="click: blah, attr: {class: 'Hi'}">Click me</div>

JavaScript

$(function(){
    var viewModel = {
        blah: function(data, event){
            alert("hi!");
        }
    };
    
    ko.applyBindings(viewModel);
});